Hello, I have a 2004 F150 fx4 with a weird abs problem, both brake light and abs light are on. Bought the truck with abs not functioning, I have been trying to figure it out. There’s a code for the rear abs sensor, its been replaced, same problem, same code. What I find weird is on hot days (87+ degrees) the lights turn off and the abs starts working, shut the truck off soon after and restart, there back on. On top of that my cruise control still functions perfectly fine, as far as I know its suppose to be disabled when the abs isn’t functioning or have I been told wrong? Ac still works, I don’t know if this has anything to do with it, figured I say because I’ve heard it disables the ac, in some weird way. Anyone have any idea whats going on? Any forms already exist with similar issue that I’ve over looked? I’ve been told my abs module is shot, figured I look into it a little more to make sure before I change it out if it is the problem.

 

An ABS code can disable cruise sometimes. But not always. It kind of varies from car to car. About the AC not working because of ABS, I've never heard of that before. The ABS module could be shot. But it's not a common failure on these trucks